GXemul Code2

Only add input from the lk201 keyboard (or serial port) when there is actual space available in the rx buffer. (Similarly to how the luna88k serial port is handled.)

Doc updates.

Handle return values from interrupted select() when checking for available console input. (Found when using CTRL-C on Linux to enter the debugger command line, and noticed that it was spuriously broken.)

Updating OpenBSD/sgi install instructions (6.5 -> 6.8), and including a screenshot of X11 running.

Removing RAMDISK example output from the docs.

Implementing mouse emulation support for the LUNA88K machine.

Adding -alldirs to allow swap to work directly at bootup.

History update for previous commit.

Adding chmod 1777 tmp to the nfs server install instructions, just in case.

Getting rid of the unused (and wrongly parsed) domain_name from the net configuration.